Use Train release for all OpenStack projects
Use Train release for all OpenStack projects

Versions were generated via the following command:

tools/version-check.py --openstack-release train --include-independent

Some other versions had to be changed manually, including those not
managed via the OpenStack release process:

    almanach, gnocchi, networking-ansible, vmware-nsx, vmware-nsxlib,
    networking-l2gw, nova-mksproxy, novajoin, rally

VMTP 2.5.0 is the latest release, but does not support python 3.
Sticking to master.

Revert this on master once kolla stable/train branch has been created.

Change-Id: I7b1d280c75b7cc6ec1aa5d7c413b3861ffa2c459

rahulunair/kolla,stackforge/kolla,stackforge/kolla,openstack/kolla,rahulunair/kolla,stackforge/kolla,openstack/kolla